Thermostat: Service and Repair

Coolant Thermostat, Removing and Installing

Special tools, testers and auxiliary items required

• Drip tray (V.A.G 1306) or drip tray for workshop crane (VAS 6208)






• Torque wrench (V.A.G 1331)






• Hose clip pliers VAS 6362

Perform the following:

Removing


Risk of scalding due to hot steam and hot coolant.

• The coolant system is under pressure when the engine is warm.

• Wear protective goggles and protective clothing to prevent damage to eyes and scalding.

• Reduce pressure by covering coolant reservoir cap with a cloth and carefully opening.

- Drain the coolant. Refer to => [ Cooling System, Draining and Filling ] Cooling System, Draining and Filling.

- Place drip tray under engine.

- Disconnect coolant hose from connecting piece - 3 -.






- Remove bolts - 4 - from connecting piece - 3 - and remove connecting piece - 3 - with coolant thermostat - 1 -.

Installing

Installation is performed in the reverse order of removal. When doing this note the following:

- Moisten new O-ring - 2 - with coolant.






- Insert the connection - 3 - with the coolant thermostat - 1 - in the cylinder block.

• The clip of the thermostat must be positioned at approximately right angle.

- Tighten mounting bolts - 4 -.

Tightening specification: 15 Nm

- Fill the coolant. Refer to => [ Cooling System, Draining and Filling ] Cooling System, Draining and Filling.